Dipper tooth



Jung 26,1928.

J. C. TAYLOR. JR

DIPPER TOOTH Filed Sept. 21, 1927 6 I gwuafito'o day/v .6? $14402 (/22,

Patented June 26, 1928 UNITED STATES PATENT OFFICE,

JOHNYC. TAYLOR, JR., OF HIGH BRIDGE, NEW JERSEY, ASSIGNOR '10 TAYLOR-WEAR- TON IRON AND STEELCOMPANY, OF HIGH BRIDGE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

DIPPER TOOTH.

Application iiled September 21, 1927. Serial No. 220,957.

Theinvention relates'more particularly to dipper teeth of the replaceable and reversible type. 1 s

For many years it has been standard'prae- 5 tice to construct digging points, and their complemental bases, of manganese steel because of the pronounced toughness of that metal. However, there are certain classes of digging demanding a constantly sharp point,

in which manganese steel has not proven economical becautein those classes it wears rapidly and requiresfrequent reversal and pointing.

The object of my invention is to construct 1 manganese steel digging points in such Way as to lessen wear in service and in such Way as to fit them for all classes of digging.

The nature of the invention consists in incorporating in the body of the point an element of tool steel or other hard steel so that when the digging edge is worn away the insert or core will be exposed and will retard further wear.

The preferred embodiment of the. invention is illustrated inthe accompanying drawings, wherein F'gure 1 is a diagrammatic view of the improved point. i

Fig. 2 is a side view, and Fig. 3 is a section on line 33 of'F-ig 2.; The numeral 5 represents a point dfy'con ventional wedge form having the' usual web connected, jaws 6, terminating in securing lugs 7. c

the point invests a wear member or insert introduced in the actof casting. -The insert consists of a main body 8 of rectangular section having a front extension 9 of Wedge 40 form in conformity with the shape of the point, a rearward extension 10, and side ex tensions or wings 11. The rear extension is According to my invention, the metal of formed with recesses or cavities 12 which cooperate with the-investing metal to positively fix or anchor the insert. The Wings 11, as indicated, may initially be exposed to retard side wear of the point. I

It will be understood that the point body is by preference constructed of manganese steel or other tough metal, and that the insert is formed of wear resisting material, such as tool steel or other hard steel, for example, stellite. Evidently when the digging edge of the investing metal is Worn away, the insert will be exposed and will operate to retard further wear of the point.

Having described my invention, I claim side Wear of the point. I

3. A digging point, comprising a man'a nese steel'body, and a tool steel insertinvested by the metal of the body, and having a portionshaped to conform to the point and operating to retard wear of the body.

4.- Adigging point, comprising a manganese steel body formed with a digging edge,

and a member constructed ofstellite and.

having a digging portion underlying the diggingedge of the body, which becomes active when'exposed and retards further wear of the bod In testimony whereof I atlix my signature JOHN c. TAYLOR, JR, 

